Most Helpful Girl
Oh wow! Okay, so for sentimentality, I have to say Eevee, my first love <3 I just love it so much. It has so much potential and it's adorable, and I don't really hate any of the eeveelutions (though I'm not keen on Jolteon or Flareon), so that is my favourite pokemon. It's the one I have the most merch of too.
But, if I'm actually going for something based on not just sentimentality and thinking it's cute, I have to go with Banette. Ghost types rival my love for fairy types, and Banette is just perfect <33
Most Helpful Guy
Here is a picture of one riding a fancy horse1